<?php
/**
 * Smarty Internal Plugin Resource File
 *
 * @package Smarty
 * @subpackage TemplateResources
 * @author Uwe Tews
 * @author Rodney Rehm
 */

/**
 * Smarty Internal Plugin Resource File
 *
 * Implements the file system as resource for Smarty templates
 *
 * @package Smarty
 * @subpackage TemplateResources
 */
class Smarty_Internal_Resource_File extends Smarty_Resource {
	
	/**
	 * populate Source Object with meta data from Resource
	 *
	 * @param $source Smarty_Template_Source
	 *       	 source object
	 * @param $_template Smarty_Internal_Template
	 *       	 template object
	 */
	public function populate(Smarty_Template_Source $source, Smarty_Internal_Template $_template = null) {
		$source->filepath = $this->buildFilepath ( $source, $_template );
		
		if ($source->filepath !== false) {
			if (is_object ( $source->smarty->security_policy )) {
				$source->smarty->security_policy->isTrustedResourceDir ( $source->filepath );
			}
			
			$source->uid = sha1 ( $source->filepath );
			if ($source->smarty->compile_check && ! isset ( $source->timestamp )) {
				$source->timestamp = @filemtime ( $source->filepath );
				$source->exists = ! ! $source->timestamp;
			}
		}
	}
	
	/**
	 * populate Source Object with timestamp and exists from Resource
	 *
	 * @param $source Smarty_Template_Source
	 *       	 source object
	 */
	public function populateTimestamp(Smarty_Template_Source $source) {
		$source->timestamp = @filemtime ( $source->filepath );
		$source->exists = ! ! $source->timestamp;
	}
	
	/**
	 * Load template's source from file into current template object
	 *
	 * @param $source Smarty_Template_Source
	 *       	 source object
	 * @return string template source
	 * @throws SmartyException if source cannot be loaded
	 */
	public function getContent(Smarty_Template_Source $source) {
		if ($source->timestamp) {
			return file_get_contents ( $source->filepath );
		}
		if ($source instanceof Smarty_Config_Source) {
			throw new SmartyException ( "Unable to read config {$source->type} '{$source->name}'" );
		}
		throw new SmartyException ( "Unable to read template {$source->type} '{$source->name}'" );
	}
	
	/**
	 * Determine basename for compiled filename
	 *
	 * @param $source Smarty_Template_Source
	 *       	 source object
	 * @return string resource's basename
	 */
	public function getBasename(Smarty_Template_Source $source) {
		$_file = $source->name;
		if (($_pos = strpos ( $_file, ']' )) !== false) {
			$_file = substr ( $_file, $_pos + 1 );
		}
		return basename ( $_file );
	}

}

?>